{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["adverse effect"], "input": "Five cases ( four from the literature and one new case ) are presented in which patients unsuspected of having vitamin B12 deficiency developed subacute combined degeneration of the spinal cord following nitrous oxide anesthesia ."}
{"adverse effect": [{"subject": "subacute combined degeneration of the spinal cord", "object": "nitrous oxide"}]}